20042480

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1$

素因数の和:258

約数の個数: 80

約数和(自身を含む): 49416480

約数和(自身を除く): 29374000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 53, 58, 80, 106, 116, 145, 163, 212, 232, 265, 290, 326, 424, 464, 530, 580, 652, 815, 848, 1060, 1160, 1304, 1537, 1630, 2120, 2320, 2608, 3074, 3260, 4240, 4727, 6148, 6520, 7685, 8639, 9454, 12296, 13040, 15370, 17278, 18908, 23635, 24592, 30740, 34556, 37816, 43195, 47270, 61480, 69112, 75632, 86390, 94540, 122960, 138224, 172780, 189080, 250531, 345560, 378160, 501062, 691120, 1002124, 1252655, 2004248, 2505310, 4008496, 5010620, 10021240, 20042480]

約数ペア:

[(1, 20042480), (2, 10021240), (4, 5010620), (5, 4008496), (8, 2505310), (10, 2004248), (16, 1252655), (20, 1002124), (29, 691120), (40, 501062), (53, 378160), (58, 345560), (80, 250531), (106, 189080), (116, 172780), (145, 138224), (163, 122960), (212, 94540), (232, 86390), (265, 75632), (290, 69112), (326, 61480), (424, 47270), (464, 43195), (530, 37816), (580, 34556), (652, 30740), (815, 24592), (848, 23635), (1060, 18908), (1160, 17278), (1304, 15370), (1537, 13040), (1630, 12296), (2120, 9454), (2320, 8639), (2608, 7685), (3074, 6520), (3260, 6148), (4240, 4727)]